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Features

at Env. 25°C

Common

characteristics

From keypad or serial communications, the user selects:

- the type of input - the type of output and the safe conditions

- the associated functions and the - the type and functionality of the alarms

corresponding outputs - the values of all the control parameters

- the type of control algorithm

A/D converter with 50,000 points

Update measurement time : 0.2 sec

Sampling time : 0.5 sec

Input shift : ± 60 digits

Input filter : 1...30 sec (OFF= 0)

Accuracy

0.25% ± 1 digit (T/C and RTD)

0.1% ± 1 digit (mA* and mV)

Resistance

thermometer

(for ∆T: R1+R2

must be <320Ω)

Pt100Ω at 0°C

(IEC 751)

°C /°F

selectable

2 or 3 wire

connection

Line: 20Ωmax (3 wire)

Thermal drift

0.35°C/10°C env. T.

<0.35°C/10Ω line

resist.

Thermocouple

L,J,T,K,S

(IEC 584)

°C /°F

selectable

Internal cold

junction

compensation

Line: 150Ω max

Thermal drift

<2µV/°C env. T.

<5µV/Ω line resist.

DC input

(current)

0/4...20mA

with 2.5Ω ext.

Shunt

Rj > 10MΩ

Engineering units,

floating decimal point,

Low Range -999...9999

High Range -999...9999

100 digits minimum

Input drift:

< 0.1%/20°C env. T.

DC input

(voltage)

0/10…50mV

Rj >10MΩ

Indicator

with 2 alarms

AL1 alarm AL2 alarm

OP1- relay or triac OP2 - Logic

OP2 - Logic OP1 - relay or triac

1 PID loop or ON/OFF

with 1 alarm

Control output AL2 alarm

OP1 - relay or triac OP2 - Logic

OP2 - Logic OP1 - relay or triac

Algorithm P.I.D. with overshoot control or ON/OFF

Proport. band (P) 0.5…999.9%

P.I.D. algorithm

Integral time (I) 0.1…100.0 min.

OFF = 0

Derivative time (D) 0.01…10.00 min.

Cycle time 1…200 sec.s

Overshoot control 0.01…1.00

High limit 100.0…10.0%

Hysteresis 0.1…10.0% ON/OFF algorithm

SPST relay N.O., 2A/250V~ for resistive load

Triac, 1A/250V~ for resistive load

Logic (SSR drive) not isolated: 5V

–

, ± 10%, 30mA max

Between 100 and

240V

~error is

minimal

Total

configurability

Process

Variable (PV)

input

(for signal

ranges

see Table 1)

Operating

modes

Control mode

Output 1 (OP1)

Output 2 (OP2)

Hysteresis 0.1…10.0% range

Active high

Absolute threshold, whole range

Active low

Hysteresis 0.1…10.0% range

Action

type

Deviation threshold ± range

Band threshold 0…range

Absolute threshold, whole range

Sensor break

Up and down ramps 0.1…999.9 digit/min (OFF = 0)

Low limit from low range to high limit

High limit from low limit to high range

Galvanically isolated: 500V~/1min

Resolution: 12 bit (0.025%)

Accuracy: 0.1%

Current output:

0/4...20mA 750Ω/15V max

Depending on the process condition,

the controller applies the best method

Step response

Natural frequency

RS485 isolated, Modbus/Jbus protocol 1200, 2400, 4800, 9600 bit/sec, two wires

+18V

–

±20%, 30mA max for external transmitter supply (Option)

Alarm 1 (AL1)

(indicator with

2 alarms)

Alarm 2 (AL2)

Setpoint

(Option)

PV retransmission

output

One-shot

uzzy

tuning

Ser. comms. (opt.)

Aux. p. supply

Input Type

RTD

Pt100Ω at 0°C

T/C type L

Fe-Const.

T/C type

Fe-Cu 45% Ni

T/C type

Cu - CuNi

T/C type

Chromel- Alumel

T/C type

Pt10%Rh-Pt

0/4…20 mA

0/10…50 mV

Configurable engineering units

mA, mV, V, bar, psi, RH, pH

0…1600 °C

32…2912 °F

0…1200 °C

32…2192 °F

-200…400 °C

-328…752 °F

0…600 °C

32…1112 °F

0…600 °C

32…1112 °F

-99.9…300.0 °C

-99.9…572.0 °F

-200…600 °C

-328…1112 °F

Scale Range

Table 1 : Process Variable (PV) Inputs/Signal Ranges

Fuzzy Tuning

Two methods of tuning are available:

- Auto-Tuning (one-shot)

- Natural Frequency (one-shot)

Fuzzy Tuning automatically selects one of the two

methods which ensure the best result for each

condition.

The Auto-Tuning method works best on the step

response basis. When activated, if a deviation

exists between the setpoint and process variable

larger than 5% of scale range, the controller

modifies the output value. Then, in a short time, it

calculates the P.I.D. parameters and the new

algorithm is operational immediately. The main

advantages of this method are fast calculation

and quick implementation.

The Natural Frequency method works best when

the process variable is very near to the setpoint.

When activated, it causes a process oscillation

around the setpoint value. The main advantage of

this method is a reduced disturbance to the

process.

Tuning end time and

parameter setting

Auto-tuning start

Setpoint change

Main control

output

Main control

output

Natural frequency

tuning start

Tuning end time and

PID parameter setting

Active high

Active low

Special function

Description

Technical Data

*Requires field calibration for 0.1% accuracy

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